The Raspberry Pi RTC module communicates with the Raspberry Pi via the I2C interface and uses the DS1307 chip to keep track of the time. The CR1220 battery powers the clock when the Raspberry Pi is turned off. The module also supports a TTL serial port connection for online debugging.
- Type: Board
- Interface: I2C
- RTC chip: DS1307
- Battery: CR1220
- Operating voltage: 5 V
- Maximum current: 1.5 mA
- VBAT current: 800 nA
- Operating temperature: 0 to +50 °C
- Oscillator crystal: Epson, 20 ppm
- Dimensions: 22 × 26 × 18.6 mm
- Weight: 4.35 g
- Mounting holes: 2 × 5
- Connector: Stacking Header